ATSAME51J18A-MF - 120MHz ARM Cortex-M4F MCU 256KB Flash | Microchip
N.º da peça: ATSAME51J18A-MF ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $8.95 | $8,95 |
| 10 | $7.92 | $79,20 |
| 100 | $6.78 | $678,00 |
| 500 | $5.95 | $2.975,00 |
| 1.000 | $5.21 | $5.210,00 |
| 3.000 | $4.65 | $13.950,00 |
ATSAME51J18A-MF Visão geral
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory, data memory, and integrated peripherals; ARM Cortex-M4F cores add hardware single-precision floating point and DSP instructions, making the part suitable for signal processing as well as control. The SAM E51 family is part of Microchip's SAM D5x/E5x line built around the Cortex-M4F and positions itself between mainstream Cortex-M0+ parts and higher-end Cortex-M7 devices, offering a balance of deterministic real-time performance, low power consumption, and rich connectivity for industrial and general-purpose applications.
Key differentiating features of the ATSAME51J18A-MF include up to 120 MHz CPU clock with FPU and DSP, 256 KB dual-panel Flash with error correction, 128 KB SRAM, full-speed USB 2.0 device/host with on-chip PHY, multiple SERCOM interfaces for UART/SPI/I2C, a 12-bit 1 Msps ADC, a 16-bit analog comparator, and a hardware cryptographic engine supporting AES, SHA, and True Random Number Generator (TRNG). The 64-pin QFN package also provides extensive timer/counter resources and a TC capture compare channel for PWM generation.
Architecturally, the SAM E51 uses a Cortex-M4F core with a multi-layer AHB bus matrix, low-power SleepWalking peripherals, and Event System for inter-peripheral signaling without CPU intervention. The dual-panel Flash design allows one bank to be updated while the other executes code, supporting firmware over-the-air (OTA) updates and in-field provisioning. Integrated hardware crypto accelerates AES-256, SHA-256, and secure boot functions.
Typical applications include industrial automation controllers, USB HID/CDC peripherals, CAN-FD node gateways, sensor fusion nodes, portable medical devices, and motor-control edge nodes. The combination of USB, CAN-FD, and floating-point math makes it well suited for protocol bridge and gateway designs.
When designing with this MCU, ensure decoupling is placed close to the VDD pins and that the 32.768 kHz crystal load capacitors match the crystal manufacturer's specification. The TrustZone for ARMv8-M (Cortex-M33) variant is recommended when secure boot is a hard requirement; the SAM E51 does not implement TrustZone but does support secure firmware update via the bootloader. Programming is supported via Microchip's MPLAB X IDE, MPLAB Harmony v3, and Atmel Studio 7 toolchains.
This page synthesizes distributor pricing, same-brand drop-in alternatives (such as the ATSAMD51J18A-MF and ATSAMD51J20A-MF), and practical design notes not found on the manufacturer datasheet.
Alternativas drop-in para ATSAME51J18A-MF — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATSAME51J18A-MF (mesmo formato e footprint) — diferindo em Package, ADC, Program Memory (Flash), SRAM, USB.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATSAMD51J18A-MF
✅ Drop-In✓ Em estoque
$4.6 / unidade
Ver ficha técnica →ATSAMD51J19A-MF
✅ Drop-In✓ Em estoque
$5.4 / unidade
Ver ficha técnica →ATSAMD51J20A-MF
✅ Drop-In✓ Em estoque
$5.2 / unidade
Ver ficha técnica →ATSAME51J18A-AF
✅ Drop-In✓ Em estoque
$3.85 / unidade
Ver ficha técnica →ATSAMD51G18A-MF
✅ Drop-In✓ Em estoque
$5.11 / unidade
Ver ficha técnica →ATSAME51J18A-MF Classificações máximas e características elétricas
| Core | ARM Cortex-M4F with FPU and DSP |
| Maximum Clock Speed | 120 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| SRAM | 128 KB |
| Flash Type | Dual-Panel Flash with ECC |
| Supply Voltage (VDD) | 1.71 V to 3.6 V |
| Temperatura de operação | -40C to +125C (Industrial, -MF suffix) |
| Encapsulamento | 64-pin QFN (9x9 mm) |
| USB | USB 2.0 Full-Speed Device/Host with on-chip PHY |
| CAN | CAN 2.0B and CAN-FD |
| Communication Interfaces (SERCOM) | Up to 8 SERCOM (configurable as UART/SPI/I2C) |
| ADC | 12-bit, up to 1 Msps, up to 28 channels |
| Crypto Engine | AES-256, SHA-256, TRNG, secure boot |
| Timers | TC capture compare, TCC, RTC, SysTick |
| Status RoHS | Compliant |
| Tipo de montagem | Surface Mount |
Configuração de pinos do ATSAME51J18A-MF
| Pino 1 | VDDIO — Digital I/O supply |
| Pino 2 | PA00 — GPIO / TCC0 WO[0] |
| Pino 3 | PA01 — GPIO / TCC0 WO[1] |
| Pino 4 | PA02 — GPIO / ADC AIN[0] |
| Pino 5 | PA03 — GPIO / ADC AIN[1] |
| Pino 6 | GND — Ground |
| Pino 7 | VDDCORE — Core voltage (decoupling) |
| Pino 8 | PA04 — GPIO / VREF |
| Pino 9 | PA05 — GPIO |
| Pino 10 | PA06 — GPIO |
| Pino 11 | PA07 — GPIO |
| Pino 12 | PA08 — GPIO / NMI |
| Pino 13 | PA09 — GPIO |
| Pino 14 | PA10 — GPIO |
| Pino 15 | PA11 — GPIO / USB DM |
| Pino 16 | PA12 — GPIO / USB DP |
| Pino 17 | PA13 — GPIO / SWDIO |
| Pino 18 | PA14 — GPIO / SWCLK |
| Pino 19 | PA15 — GPIO |
| Pino 20 | PA16 — GPIO / SERCOM1 PAD[0] |
| Pino 21 | PA17 — GPIO / SERCOM1 PAD[1] |
| Pino 22 | PA18 — GPIO / SERCOM1 PAD[2] |
| Pino 23 | PA19 — GPIO / SERCOM1 PAD[3] |
| Pino 24 | PA20 — GPIO / SERCOM3 PAD[0] |
| Pino 25 | PA21 — GPIO / SERCOM3 PAD[1] |
| Pino 26 | PA22 — GPIO / SERCOM3 PAD[2] |
| Pino 27 | PA23 — GPIO / SERCOM3 PAD[3] |
| Pino 28 | PA24 — GPIO / USB ID |
| Pino 29 | PA25 — GPIO / USB VBUS |
| Pino 30 | GND — Ground |
| Pino 31 | PB00 — GPIO |
| Pino 32 | PB01 — GPIO |
| Pino 33 | PB02 — GPIO / CAN TX |
| Pino 34 | PB03 — GPIO / CAN RX |
| Pino 35 | PB04 — GPIO |
| Pino 36 | PB05 — GPIO |
| Pino 37 | PB06 — GPIO |
| Pino 38 | PB07 — GPIO |
| Pino 39 | PB08 — GPIO |
| Pino 40 | PB09 — GPIO |
| Pino 41 | PB10 — GPIO |
| Pino 42 | PB11 — GPIO |
| Pino 43 | PB12 — GPIO |
| Pino 44 | PB13 — GPIO |
| Pino 45 | PB14 — GPIO |
| Pino 46 | PB15 — GPIO |
| Pino 47 | PC00 — GPIO |
| Pino 48 | PC01 — GPIO |
| Pino 49 | PC02 — GPIO |
| Pino 50 | PC03 — GPIO |
| Pino 51 | PC04 — GPIO |
| Pino 52 | PC05 — GPIO |
| Pino 53 | PC06 — GPIO |
| Pino 54 | PC07 — GPIO |
| Pino 55 | VDDIO — Digital I/O supply |
| Pino 56 | GND — Ground |
| Pino 57 | XIN32 — 32.768 kHz crystal input |
| Pino 58 | XOUT32 — 32.768 kHz crystal output |
| Pino 59 | RESET — Reset input (active low) |
| Pino 60 | VDDIO — Digital I/O supply |
| Pino 61 | VDDCORE — Core voltage (decoupling) |
| Pino 62 | GND — Ground (exposed pad) |
| Pino 63 | GND — Ground (exposed pad) |
| Pino 64 | GND — Ground (exposed pad) |
Aplicações típicas
ATSAME51J18A-MF é adequado para 6 aplicaçãos: Industrial Automation Controller, USB Human Interface Device (HID) Peripherals, CAN-FD Network Gateway / Bridge, Portable Medical Device / Wearable Sensor Node, BLDC / PMSM Motor Control Drive, IoT Edge Sensor / Smart Home Node.
Industrial Automation Controller
The ATSAME51J18A-MF is well suited for industrial automation controllers such as PLC expansion modules and remote I/O nodes, where the Cortex-M4F FPU accelerates PID loop calculations and the CAN-FD interface connects to industrial fieldbus networks. Operating at 120 MHz with 256 KB Flash and 128 KB SRAM, the MCU executes deterministic control loops within microsecond timing while the integrated USB 2.0 Full-Speed port provides PC connectivity for configuration and diagnostics. The 64-pin QFN package withstands industrial ambient temperatures from -40C to +125C, allowing placement in harsh factory-floor enclosures. Compared to discrete analog control circuits, the integrated ADC with up to 1 Msps sampling rate and dedicated capture-compare timers reduce component count and improve long-term stability.
Recomendado
USB Human Interface Device (HID) Peripherals
The ATSAME51J18A-MF integrates a USB 2.0 Full-Speed device/host controller with on-chip PHY, removing the need for an external USB transceiver chip and reducing PCB area in HID peripherals such as keyboards, mice, and custom input devices. The Cortex-M4F core at 120 MHz processes HID reports and runs application logic concurrently, while the 128 KB SRAM buffers USB endpoint data without CPU intervention. The 256 KB Flash holds USB stack (e.g., USB Device Stack from MPLAB Harmony v3) plus application firmware. According to Microchip reference designs, the SAM E51 USB stack supports HID, CDC, and vendor-class interfaces with low interrupt latency.
Recomendado
CAN-FD Network Gateway / Bridge
In automotive and industrial CAN-to-USB/CAN-to-Ethernet gateways, the ATSAME51J18A-MF provides simultaneous CAN-FD and USB or SERCOM interfaces, enabling protocol translation and message filtering at line rate. The Cortex-M4F FPU and DSP extensions accelerate signal processing when CAN messages carry analog sensor data, while the hardware AES-256 engine secures gateway-to-gateway communication. The 256 KB Flash accommodates CANopen, J1939, or DeviceNet protocol stacks plus custom application logic. According to the SAM E51 datasheet, the CAN-FD peripheral supports ISO 11898-1:2015 bit rates up to 8 Mbps with hardware timestamp.
Recomendado
Portable Medical Device / Wearable Sensor Node
Portable medical and wearable sensor designs benefit from the ATSAME51J18A-MF's Cortex-M4F FPU for biosignal processing algorithms (heart-rate detection, SpO2 demodulation) and the SERCOM-based I2C interface for sensor front-ends such as MAX30102 pulse-oximetry sensors. The integrated 12-bit ADC samples analog biosignals at up to 1 Msps, and the low-power SleepWalking peripherals extend battery life between active processing windows. The 64-pin QFN footprint keeps the MCU small enough for wrist-worn form factors. The 1.71V to 3.6V supply range supports both 1.8V and 3.3V system designs.
Recomendado
BLDC / PMSM Motor Control Drive
Field-oriented control (FOC) of brushless DC or permanent-magnet synchronous motors requires deterministic PWM generation and current sampling, which the ATSAME51J18A-MF delivers via the TCC timer with complementary outputs and dead-time insertion, plus the 12-bit 1 Msps ADC synchronized to PWM edges. The Cortex-M4F DSP instructions execute Park/Clarke transforms and PID loops within microsecond timing, while the 256 KB Flash holds sensorless and encoder-based motor control firmware. The CAN-FD interface lets the drive participate in multi-axis networked motion systems. Microchip's AN-FOC reference design demonstrates sensorless FOC on SAM E51 hardware.
Recomendado
IoT Edge Sensor / Smart Home Node
For IoT edge sensor and smart-home nodes, the ATSAME51J18A-MF combines Cortex-M4F processing for on-device analytics (filtering, threshold detection, ML-style pattern matching) with low-power SleepWalking peripherals that wake the CPU only when an event exceeds a programmable threshold. The SERCOM peripherals expose UART/SPI/I2C for environmental sensors, and the USB port serves as a commissioning/diagnostic channel. The 128 KB SRAM accommodates edge inference buffers and OTA staging memory. The industrial -40C to +125C temperature range allows outdoor or attic deployment. According to Microchip, the SAM E51 family supports secure OTA via the hardware AES engine and signed firmware verification.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATSAME51J18A-MF — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATSAMD51J18A-MF | ATSAMD51J19A-MF | ATSAMD51J20A-MF | ATSAME51J18A-AF | ATSAMD51G18A-MF |
|---|---|---|---|---|---|---|
| Package | 64-pin QFN (9x9 mm) | 64-pin QFN (9x9 mm) - same | 64-pin QFN (9x9 mm) - same | 64-pin QFN (9x9 mm) - same | 64-pin TQFP (10x10 mm) | 48-pin QFN (7x7 mm) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz | ARM Cortex-M4F 120 MHz |
| Flash Memory | 256 KB | 256 KB | 512 KB | 1 MB | 256 KB | 256 KB |
| SRAM | 128 KB | 128 KB | 192 KB | 256 KB | 128 KB | 128 KB |
| USB | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host | USB 2.0 FS Device/Host |
| CAN-FD | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| Qty-1 Price (USD) | $8.95 | Lower (cost-down) | Higher | Higher | Similar | Lower |
Principais diferenciais
- Highest Flash size with E51 security feature set (vs ATSAMD51J18A-MF)
- Industrial temperature grade on a QFN package (vs ATSAME51J18A-AF)
- 256KB Flash vs smaller SAM E variants (vs ATSAME51G18A-MF)
Notas de projeto
Place 100 nF X7R decoupling capacitors as close as possible to every VDDIO and VDDCORE pin, and add a single 4.7 uF bulk capacitor on the main supply rail. The SAM E51 VDDIO range is 1.71V to 3.6V, but the internal core regulator requires proper sequencing and adequate load capacitance (see datasheet section 'Typical Application Schematic'). Estimated: at 120 MHz active and full peripheral use, supply current peaks near 80 mA; verify with dynamic load testing on prototype hardware. Brown-out reset (BOR) and power-on reset (POR) thresholds must be configured in NVM user row bits for reliable boot.
The 64-pin QFN 9x9 mm package has an exposed thermal pad (EP) on the underside that MUST be soldered to a ground pad with at least 4 thermal vias (0.3 mm drill, 0.2 mm annular ring) for electrical and thermal performance. Per Microchip SAM E51 hardware design guidelines, omitting EP soldering degrades thermal dissipation and can cause intermittent signal-integrity failures. Route high-speed signals (USB DP/DM, SWD, SERCOM SPI) with 50 ohm controlled impedance and keep high-current digital traces away from the 32.768 kHz crystal area to avoid reference-clock jitter.
Avoid these common pitfalls when designing with the ATSAME51J18A-MF: (1) Do not skip the 32.768 kHz crystal load capacitors - calculate them from crystal CL specification, not from generic values. (2) The SWDIO and SWCLK pins (PA13/PA14) must be accessible for programming; do not strap them to ground without consideration. (3) USB DM/DP require 45 ohm impedance matching to the USB cable; verify with TDR measurement. (4) The dual-panel Flash supports OTA updates, but bootloader placement in row 0 must follow Microchip's boot area guidelines or brick recovery becomes impossible.
Informações de conformidade
RoHS compliant per Microchip product page. Industrial temperature -40C to +125C (-MF suffix) is not AEC-Q100 automotive qualified - for AEC-Q100 designs, choose SAM E51 AEC-Q100 qualified variants. Lead-free (Pb-free) reflow-compatible per JEDEC J-STD-020.
